Container



oct. 22, 1929. T. w. RIEKE y 1,732,535

CONTAINER Filed Feb. 5, 1925 bil/@4%. air

if w ll IlIIIH` i Patented Oct. 22, 1929 ed repeatedly without danger of the bung UNITED STATES PATENT OFFICE THEODORE W. RIEKE, OF AUBURN, INDIANA, ASSIGNOR T0 RIEKE METAL PRODUCTS CORPORATION, OF `AUBURN, INDIANA, .A CORPORATION OF INDIANA CONTAINER Application filed February -mounted and the process of mounting and securing the bung ring in position.

One object of the invention is to provide an improved bung ring capable of being associated with an opening in a wall for a container. y

Another object of the invention is to construct a container wall having an opening and to provide an improved connection between the bung ring for the opening and the container wall, whereby the positioning of a plug in the opening and its tightening therein to effect sealing and its removal, may be effectbecoming loose or the container wall being damaged with resulting leakage.

A further object of the invention is to provide animproved process of connecting and securing bungs in or in association with openings in the walls of containers, whereby a permanent and rigid connection is made capable of resisting strains due to tightening "plugs in the bungs or their removal theredll..

from.

Other objects of the invention will be apparent to those skilled in the art to which my invention relates from the following description taken in connection with the accompanying drawings, wherein I Fig. 1 is a plan view of a portion of a container wall, such as the top wall or head of the container, illustrating the first step in carrying out my process. y

Fig. 2 is a section -on the line 2-2 of Fig. 1, looking inthe direction of the arrows; the head being shown up-side down-the posilion it occupies when operated upon by the ies.

Fig. 3 is a plan view of a bung ring ernbodying my invention and constructed for use in connection with my process tqprovide ythe novel. form of connection between the bung ring and container wall.

Fig. 4 is a section on the radii 4, 4, of Fig.v

3, looking in the direction of the arrows.

Fig. 5 is a plan View of one element of the 5, 1926. Serial No. 86,255.

Fig. 6 is a sectional view of the die elementsin co-o erative relation.

Fig. is a plan view of the container wall and bung ring with the latter in locked rela- 4tion to the wall.

Figs. 8 and 9 are sections on the lines 8'-8 and 9-9, respectively, of Fig. 7, but turned up-side down, so as to show the step effected by the die elements illustrated in Fig. 6.

Fig. 10 is a section on the line 8-8 of Fig. 7, but showing a gasket between the flange of thelpung ring and the flange of the container wa .In the drawings, 1 indicates a sheet metal wall having an opening 2. AThe wall 1 may comprise a side or a top wall of the container, andsueh container may be variously constructed. I have, for illustration pur poses, shown a portion of the head of a cylindrical container, the side walls of which may be formed of sheet metal, wood or otherwise. The head is shown as it is shaped ready for assembly with the side wall or`body of the container.- so that the seaming flange 1 is in its extended position. The opening 2 is formed in any desired manner and the wall 1, surrounding the opening2, is up-set Vor distended by any suitable means to form an 'annular side wall 3 and a flange 4 extending inwardly from the outer edge of the side wall 3. The sheet of-metal 1 may be operated upon with either side up, but in Fig. 2 it is shown withits upper side down, the position itY occupies in the die mechanism indicated as an entirety at 6.

7 indicates the bung ring.l The bung ring -7 comprises a body portion 8, the inner walls of which are screw threaded at 9to'receive a plug 9', and a. flange 10.Y 11 indicate cutthe latter and relative thereto.

that the corners resulting at their ends will not be very sharp and thuspermit a slight stretching of the metal over and -around the projections 12 without danger of fracturin the body portion 8 of the bung ring, a fe- A male element 15 shaped to receive the side wall 3 and flange 4, and a cam 16 to effect the crimping operation, as will' be later set forth. 17 indicates a support forming part of a frame for the die mechanism and supportiner a plate 18, the latter being rigidly secured to the support 17 by cap screws 19. The plate 18 `is formed with an opening 18a through which certain of the die elements (to be later referred to) extend. The cam 16 consists of a boss surrounding the opening 18, its inner-wall having a'portion 16a inclined downwardly and inwardly to form the eamming surface. 20 indicates a pair 0f guides preferably dependin' from the plate 18 and connected at their lower ends by a cross member 21. The cross member is formed with an opening 22, the purpose of which will later appear. The female die ele ment 15 comprises a shank 23 having a collar 24 disposed below its upper end to form an annular seat for the side wall 3 and fiange 4, and a plurality of crimping devices 25 disposed inannular relation and havingat their upper extremities inturned ends 25a adapted to be projected inwardly behind the fiange 10 of the bung ring and thus effect a crimping of the side wall 3 and the interlocking connection between the wall 1 and bung ring 7, as will later appear. The crimping devices 25 extend downwardly within the cam 16 and are connected integrally to a ring 26 surrounding and loosely fitting the shank 23, whereby they may be moved endwise of The ring 26 and devices 25 are formed from metal that is somewhat resilient and the latter are spaced apart slightly and normally lie in engagement with the camming surface 16l (see Fig. 6), so that whenthe die element 15 is moved downwardly, the crimping devices are forced inwardly by the camming surface 16a. 27 indicates a cross head slidably supported at its opposite ends on the guides 20 and formed 'with an opening 27a through which the shank 23 extends. 28 indicates a coiled spring interposed between the cross member 21 and cross head 27 and normally tending to move the latter and through 1t the ring 26 and crimping devices 25 upwardly with the latter in expanded position, such upward movement being limited by the engagement of the cross head 27 with sleeves 29 slidably fitting the guides 20 and disposed between the cross head 27 and plate 18.

Following the forming of the head 1 with the side wall 3 and fiange -1 and the forming of the bung ring as above set forth, these parts are assembled in inverted position and positioned in the die element 15, with the side wall 3 within the inturned ends 25 and the head 1 resting on the free ends of the crimping devices 25; then the die element 13 is operated downwardly against the bung ring 7 (thereby pressing the latter firmly against the inner face of the fiange 4) and through the wall 1 operating to lnove the crimping devices 25 downwardly against the tension of the spring 28. As these devices move downwardly they are simultaneously acted upon by the camming surface 16 first to crimp or fold the metal of the side wall 3 inwardly over or around the flange and second to stretch the fibres of the metal around the lateral sides of the projections 12, formed by the scallops 11, so that the metal of the wall 3 is not 'only compressed around the flange 10 at right angles to the plane thereof, but the metal of the wall is folded or compressed around the opposite side edges of each projection, as' shown in Fig. 7. As a result, the projections 12 are substantially embedded in the metal of the wall 3 so that those portions of the wall 3 compressed into the scallops 11 at either side of each projection constitute abutments in the plane of the projection to prevent the rotative movement of the flange 10. Upon the return movement of the die clement 13, the head 1 is removed and the crimping devices assume their normal, expanded position under the influence of the spring 28. Figs. 8 and 9 show the head 1 and bung ring 7 following their removal from the die mechanism, the head then being ready for uniting with the container body.

In my construction of bung ring and connection thereof with the container wall, interlocking between the latter and the fiange 10 is provided for -at a plurality of points circumferentially of the bung ring. Not only does this form of construction increase the interlocking effect and enable the bung ring lto resist all rotative effort to loc/Sen it, but

it also provides a construction which is equally effective to secure relatively small sizes of bungs in the walls of containers. In my construction and the process herein disclosed, no welding or soldering is required,

but by a pressing in of the metal wall and folding thereof around the projections 12,

Athe bung is secured in permanent relation to the wall and the interlocking connection is constructed so that the bung ring does not extend through the opening 2, but seats in a distendedportion of the wall 1, and the latter terminates in and forms the Harige 4;

over the upper end wall of the bung 7, so that when a pluo 9 is fitted and tightened in the bung 7 its flange will engage the flange 4 and thus prevent leakage through the opening 2. To insure nonleak conditions a gasket may be seated on the flange 4. From the foregoing description, it will be seen that the bung ring 7 is entirely dispo-sed on one side of the wall 1 and does not project through the opening 2 therein; as a result the flange of' the plug 9 engages with the wall 1 to effect the sealing of the conta-incr even if it /were possible ,for leakage to occur between the inner surface of the wall 1 and flange 10.

My construction is also advantageous since the interlocking connection can be effected with relatively little strain on the met-al, thus avoiding danger of fractures in the metal and permitting the heavier gages of sheet metal to be used. It also permits an operative to position or remove the plug without danger of his wrench or other tool engaging the bung flange or the metal surrounding and folded thereover, since the resulting shape of these walls is different from the perimeter of the plug flange.

When desired, a gasket 29 may be interposed between the upper end wall of the bung ring 7 and its flange 10 and the under face of' the flange 4f, as shown in Fig. 10. When such a gasket is to be used, it is assembled with the wall 1 and bung ring 7 prior to the crimping operation.

lTo those skilled in the art to which my invention relates, many changes in construction and widely differing embodimentsand applications thereof will suggest themselves without departing from the spirit and scope of the invention. My disclosures and the description herein are purely illustrative and are not intended to bein any sense limiting.

What I claim is: 1. A bung ring 'comprising a body portion and an outwardly extending flange, the

peripheral edge of which is formed'withA spaced arc-shaped scallops, the portions of the flange edge between the scallops being curved about a center within its edge.

2. In a container construction, the combination of a bung ring having a body portion and` an Aoutwardly extending flange, the edge of the flange being formed with scallops to provide a plurality of spaced projections, and a container wall formed with an opening, the wall surrounding the opening being distended to form a side wall crimped inwardly relative to the periphery of said flange and folded over and around the upper and lower side edges of said projections and the end edges thereof and termmating'in aflange in face to face relation with the said ring flange.

3. A construction as claimed in claim 2 in which the width of the projections is less than the length of the scallops.

4. A construction as claimed in claim 2 in riphery of said flange toward said body portion on the under side of said flange and fold* ed into engagement with the side edges constituting the said scallops and pro] ections, whereby the latter are embedded in the metal, and terminating in a flange disposed in face to face relation with the end wall and bung ring flange.

In testimony whereof, I have hereunto 'subscribed my name.

THEODORE W. RIEKE. 

